Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors
Chatham Strait

Rudolph – Residency

10th sighting in Chatham Strait
Fluke of Rudolph
Rudolph Confirmed in the catalog @18129
Jul 27 – Sep 4, 2026 · Chatham Strait

Chatham Strait, Green and Loud

Herring thick, water green, this room never disappoints me.

120 m
Deepest dive
4:34
Longest dive
45
Dives
Sightings
4
Days between first and last sighting
39

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jul 27, 2026272 m13.0°C46 m
Aug 3, 202672 m13.6°C56 m
Aug 9, 2026330 m13.5°C120 m
Sep 4, 202672 m13.0°C59 m

Seafloor and sea temperature measured · ✳ dives modelled

Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors

Deepest dive against the seafloor, per sighting

Seafloor · measured Deepest dive · modelled
Jul 27, 2026 — seafloor 272 m (measured), deepest dive 46 m (modelled)Jul 27Aug 3, 2026 — seafloor 72 m (measured), deepest dive 56 m (modelled)Aug 3Aug 9, 2026 — seafloor 330 m (measured), deepest dive 120 m (modelled)Aug 9Sep 4, 2026 — seafloor 72 m (measured), deepest dive 59 m (modelled)Sep 4

Depth runs down from the surface. The modelled dive never passes the measured seafloor at that sighting.

Dives

120 m
Deepest dive
4:34
Longest dive
45
Dives
28 m
Avg dive depth
4
Sightings
39
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
075150120 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (330 m) and the published dive-behaviour distribution. Modelled, not measured.

Deep Effort Score

Deep

Depth, duration and recovery resolved into a single number for this session.

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Place

Where this happened · Aug 9, 2026

measured
Seafloor depth
330 m
Sea-surface temperature
13.5°C
Distance from shore
4.0 km

Across the residency · 4 sightings

measured
Seafloor depth
72 m – 330 m
Sea-surface temperature
13.0°C – 13.6°C
Distance from shore
1.0 km – 4.0 km

Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · PacIOOS coastline distance

Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors

Source records

This activity is assembled from 4 catalogued encounters on Happywhale.

Sighting records from Happywhale, published as occurrence data via GBIF. Individual records are licensed CC0 1.0, CC BY 4.0 or CC BY-NC 4.0, depending on the contributor.

The photographs and fluke identifications behind every sighting are the work of the contributing observers — the citizen scientists, naturalists and operators who logged them, each named in the underlying GBIF occurrence record. Every activity links out to its source encounters on Happywhale. Basemaps © OpenStreetMap contributors (ODbL).

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Breach is an independent project. It is not affiliated with, nor endorsed by, Happywhale or GBIF.